[okl4-developer] does linux(Wombat) re-configure UART when booting?

[kashin Lin]

i build okl4 for my pxa270 develop board and upload the image on it.
but the ouput messages just stop appearing as following:

*OKL4 - (provider: Open Kernel Labs) built on Sep 4 2007 03:31:16 using gcc
version 3.4.4.
init_spaceids:125: Init spaceids 256 spaces

*****************************************
* Iguana system, Copyright 1996-2006 *
* ERTOS - National ICT Australia *
*****************************************

vbase is 0x1302000, vend is 0xcfffffff
addr is 0x1302000, vbase is 0x1302000
PXA25X OS Timer driver starting...
PXA25X wrap handler installed
Using FFUART.
Backed PXA serial*

the stop timming seems to be at the beginning of Wombat which
use "printk" as it output function.
( the function for ouputing the message i got (above) seems to be "printf"
).

so i think there are two posible causes:
1. "prink" use the different way to ouput (comparing to "printf" )or
    Wombat re-configure UART, so the full system is working but
    i can't see the ouput messages.
   ( the required setting to connect my develop board by RS232 is 9600 8 n
1)

2. the system is really stopping due to some reasons...

so how can i recognize which one is the actual cause of this situation?
will option 1 occur?
(i'm not sure the difference between printk & printf's implementation )
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